One of the reasons I kind of gave up on deliveries after COVID was the the experience of having a friendly but slightly rushed bloke clearly politely itching to get on to the next stop turn up at some random time in the evening (it's booked to a slot but the variance was large). Then he holds your door open and either helps you unload it watches you unload a bunch of randomly packed loose items from a large handful of his plastic crates, some with a single item in them, as fast as possible into laundry baskets in the hallway so you can transfer it to the right place at leisure. That was actually somehow really annoying to me.

Tesco used to use plastic box liners which you doing just hoick out, but those were quickly stopped due to bring plastic.

I'd rather they just handed over the crates or something and I could return them for a deposit the next time. Obviously I'd also rather all the supermarkets could share the same crates so I don't have to babysit piles of each brand separately.

Maybe Ocado have a better system then Tesco here?

Ocado (at least in the UK) pack items into plastic bags inside the crates, which makes unloading easier at the doorstep.

You are charged for the bags (in the UK you have to charge 5p for plastic bags) but are refunded when you return them (during a later delivery).